CN109473184A - A kind of embedded lead bismuth alloy circuit for fuel irradiation test - Google Patents
A kind of embedded lead bismuth alloy circuit for fuel irradiation test Download PDFInfo
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- CN109473184A CN109473184A CN201811343356.XA CN201811343356A CN109473184A CN 109473184 A CN109473184 A CN 109473184A CN 201811343356 A CN201811343356 A CN 201811343356A CN 109473184 A CN109473184 A CN 109473184A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/22—Structural association of coolant tubes with headers
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/24—Promoting flow of the coolant
- G21C15/243—Promoting flow of the coolant for liquids
- G21C15/247—Promoting flow of the coolant for liquids for liquid metals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of embedded lead bismuth alloy circuits for fuel irradiation test, including device in heap, the circuit LBE and water loop, device successively includes heat-insulated pipe from outside to inside in the heap, water loop pressure pipe, moisture flow tube, LBE circuit pressure pipe, LBE isocon and test section, the circuit LBE includes the outlet LBE and LBE entrance, device forms LBE circulation loop in the outlet LBE and LBE entrance and heap, the LBE circuit pressure pipe, the circuit LBE cooler is disposed between LBE isocon, Electromagnetic Recirculation Pump, flowmeter, primary heater, expansion tank；The water loop includes cooling water outlet and cooling water inlet, and device forms cooling circuit in the cooling water outlet and cooling water inlet and heap, and water loop cooler, circulating pump and heater are disposed between the cooling water outlet and cooling water inlet.The embedded lead bismuth alloy circuit is able to carry out the test of LBE heap fuel element performance verification through the invention.
Description
Technical field
The present invention relates to nuclear reactor fuel irradiation technique fields, and in particular to a kind of insertion for fuel irradiation test
Formula lead bismuth alloy circuit.
Background technique
The cooling fast reactor of lead bismuth alloy/lead is selected one of 6 kind of the 4th generation Advanced Nuclear Energy Systems of the 4th generation nuclear energy forum.Lead bismuth
The cooling fast reactor of alloy/lead not only meets the requirement of Gen-IV nuclear energy system, but also has certain operation use experience, is current
One of the hot spot of Advanced Nuclear Energy Systems research.Research institution both domestic and external has carried out extensively with liquid lead bismuth alloy (Lead-
Bismuth Eutectic, LBE) be coolant reactor and accelerator-driven sub-critical system research and design.
Liquid lead bismuth alloy (LBE) has many superior characteristics as reactor coolant: 1) with the change of water and air
Learn inertia；2) steam pressure low in temperature range of operation；3) high-melting-point；4) big atomic number；5) superior neutronics
Can --- low neutron-absorbing.However, using LBE as coolant, however it remains some problems not being fully solved.For example, high
The lower LBE of temperature is to the etching problem of material, the control problem of the dissolved oxygen in LBE, the local deposits etc. of corrosion product.In addition, in LBE
- 209 nucleic of bismuth absorb neutron after generate polonium -210 (about 138 days half-life period), polonium -210 have alpha activity and high volatility,
There are biggish radiological hazards.
Currently, carrying out seldom for the Study on Compatibility of fuel, material and LBE under radiation parameter, irradiation and LBE corrosion
The influence of joint effect is the research and development demand of high-priority.Research and development for specific heap-type, height restore practical thermal-hydraulic ring
The fuel element performance verification test in border is committed step.There is not the LBE cooled reactor that can be run in the country at present, therefore,
Using LBE as the fuel irradiation test circuit (abbreviation LBE fuel irradiation test circuit) of coolant be carry out LBE heap fuel member
The essential facility of part performance verification test and the basic scientific research facility of LBE cooled reactor fuel research and development.In LBE
Irradiated Fuel Rod experimental study is carried out on fuel irradiation test circuit, can be mentioned for the basic scientific research work of LBE cooled reactor
It is fed back for test platform and experimental technology, to effectively promote the research and development process of newly energy nuclear power system.
Summary of the invention
The purpose of the present invention is to provide a kind of embedded lead bismuth alloy circuits for fuel irradiation test, by this hair
The bright embedded lead bismuth alloy circuit is able to carry out the test of LBE heap fuel element performance verification.
The present invention is achieved through the following technical solutions:
A kind of embedded lead bismuth alloy circuit for fuel irradiation test, including device, the circuit LBE and water return in heap
Road, device successively includes heat-insulated pipe, water loop pressure pipe, moisture flow tube, LBE circuit pressure pipe, LBE from outside to inside in the heap
Isocon and test section, the circuit LBE include the outlet LBE and LBE entrance, device in the outlet LBE, LBE entrance and heap
LBE circulation loop is formed, the LBE in the circuit LBE is entered the annular gap of LBE circuit pressure pipe and LBE isocon by LBE entrance
It flows downward, shunts bottom of the tube in LBE and turn back upwards, flow through the channel between test section and LBE isocon, most exported afterwards through LBE
Device in heap is flowed out, is disposed with the circuit LBE cooler, Electromagnetic Recirculation Pump, flow between the outlet LBE and LBE entrance
Meter, primary heater, expansion tank are provided with control oxygen system on the expansion tank；The water loop includes cooling water outlet and cooling
Device forms cooling circuit, the cooling water in water loop in water inlet, the cooling water outlet and cooling water inlet and heap
It is flowed downward by the annular gap that cooling water inlet enters between water loop pressure pipe and moisture flow tube, is rolled in moisture flow tube bottom
On back, the annular gap between LBE circuit pressure pipe and moisture flow tube is flowed through, it is most built-in through cooling water outlet outflow heap afterwards
It sets, water loop cooler, circulating pump and heater is disposed between the cooling water outlet and cooling water inlet.
Electromagnetic Recirculation Pump of the present invention is used to provide the driving force recycled in the circuit LBE；Primary heater is for adding LBE
Heat is to the needed temperature levels of test section；The circuit LBE cooler is for cooling down LBE and guaranteeing that its temperature works in Electromagnetic Recirculation Pump
Within range；Expansion tank is used to absorb the volume fluctuation in the circuit LBE, and the primary operational container for controlling oxygen system.
The basic procedure in the circuit LBE is as follows: LBE drives through Electromagnetic Recirculation Pump, enters primary heater heating through flowmeter, it
Enter the expansion tank comprising controlling oxygen system afterwards, carry out the adjusting of LBE dissolved oxygen amount and control, flows into the circuit LBE heap along primary loop piping
Internal irradiation device；Annular gap between LBE pressure pipe and LBE isocon flows downward, and LBE is released in reactor core active region through core
Hot heat temperature raising is turned back in LBE pressure bottom of the tube flow direction and is flowed up, cools down fuel element and further heat up；LBE continue to
Upper flowing, and exchange heat with the LBE of decline process and tentatively cooled down, most device overhead stream goes out in heap afterwards；It is cold through the circuit LBE
But device is inhaled into electromagnetic pump after further cooling down, and completes entire circulation.
Multinomial auxiliary system is arranged in the circuit LBE, such as LBE purification system, failed fuel element detection system, LBE leakage prison
Examining system, radiation detecting system etc., pipeline auxiliary heating system and I&C system.Failed fuel element detection system passes through monitoring
Gas componant in circuit and expansion tank, judges whether test fuel element is damaged.LBE leakage monitoring and radiation detecting system,
Whether monitoring LBE return reveals and whether LBE leaks in air.When pipeline auxiliary heating system is used for loop start
Remaining LBE in heating pipe and pipe.The measurement and control of parameters when I&C system is used to test provides for circuit operation
Data and safety signal.
Circulating pump of the present invention is used to provide the driving force of Loop Water circulation；The heater is for heating water to institute
Device portal temperature levels in the heap of palpus；The water loop cooler is connect with Secondary cooling water system, is used for circuit cycle
It is water-cooled to assigned temperature level.
The basic procedure of high temperature and pressure water loop is as follows: cooling water drives through circulating pump, and heated device heats up, later
Device in into heap；Annular gap between water loop pressure pipe and moisture flow tube flows downward, in the warp of reactor core active region
Heat source heat temperature raising, flow direction is turned back upwards near water loop pressure bottom of the tube, washes away cooling LBE circuit pressure pipe, and take away
The heat that device generates in entire embedded loop heap；Cooling water is cold through water loop cooler after device overhead stream in heap goes out
But cool down, after be inhaled into circulating pump, complete entire circulation.
The main characteristic of the invention lies in that: it will include the in-pile irradiation facilities of test fuel element in the circuit LBE, integrally set
In in the heap of high temperature and pressure water loop in device；The temperature and cooling condition provided using water loop, establishes spoke in the heap of the circuit LBE
According to the temperature field of device, and the circuit LBE is provided and is operated normally and the cooling under accident conditions, the realization insertion through the invention
Formula lead bismuth alloy circuit is able to carry out the test of LBE heap fuel element performance verification.
Further, filter and LBE purification system have been arranged in parallel between circuit cooler and Electromagnetic Recirculation Pump.
Before filter of the present invention is placed in Electromagnetic Recirculation Pump suction inlet, for filtering the solid impurity in LBE, capture clear
Except solid-state erosion；LBE purification system is mainly used for removing the solid matter in LBE, guarantees that circuit is long together with control oxygen system
LBE quality when phase runs.
LBE, through core heat release heat temperature raising, turns back in LBE pressure bottom of the tube flow direction and flows up in reactor core active region, cooling
Fuel element and further heat up；LBE continues up flowing, and exchanges heat with the LBE of decline process and tentatively cooled down, finally
Device overhead stream goes out in heap；After cooler further cools down through the circuit LBE, electromagnetism is inhaled into after filter and purification system
Circulating pump completes entire circulation.
Further, the circuit LBE further includes catch box, and the catch box and circulating pump are formed into a loop, the catch box with
Melt tank connection setting.
Catch box is located at the extreme lower position in circuit, for the most LBE in collecting loop when circuit deactivates, and auxiliary
Under helping heating system to act on, there is a certain amount of low temperature LBE；When the melting tank is enabled for circuit, heating molten Pb bismuth is closed
Gold.
Further, voltage-stablizer is provided between water loop cooler and circulating pump.
The voltage-stablizer is used to stablize the stress level of water loop, absorbs the volume fluctuation of water loop.
Cooling water cools after device overhead stream in heap goes out through water loop cooler, into voltage-stablizer, after be inhaled into
Circulating pump completes entire circulation.
High temperature and pressure water loop also sets up multinomial auxiliary system, such as water charging system, Secondary cooling water system, leakage monitoring system
System and I&C system.Water charging system is responsible for using water container water-filling into water loop, and fills the water in loop start forward direction system；System
It unites under accidental conditions, because being mended from voltage-stablizer water level low signal to system when coolant is reduced to definite value caused by normal leakage
Water.Secondary cooling water system provides ultimate heat sink for water loop, meet water loop cooler, purification system secondary unit,
The water requirements of circulating pump cooling water etc..Whether leakage monitoring system is for monitoring in water loop heap device and water loop pipeline
Leakage.The measurement and control of parameters when I&C system is used to test provides data and safety signal for circuit operation.
Further, water loop further includes purification system, is formed into a loop between the purification system and circulating pump.
Describedization system is used to filter out the corrosion product in water, purifies water.
A part of cooling water flows into purification system bypass through circulating-pump outlet, and circulation is returned after purification of water quality operates and is pumped into
Mouthful.
Further, water loop further includes accumulator, and the accumulator passes through the first peace note valve and cooling water
Entrance connection, the accumulator are connected to by the second peace note valve with cooling water outlet.
When cut accident occurs for water loop, first from accumulator to the cooling water outlet of water loop main pipeline and cooling
Water inlet fills the water simultaneously, to provide emergency cooling flow, judges automatically pipeline cut direction via the signal that I&C system provides,
Peace note valve opening position is adjusted, to ensure that emergency cooling water flows through device in heap with big flow, it is ensured that fuel element and heap are built-in
The safety set.
Further, accumulator is connected to Emergent water tank, is provided between the accumulator and Emergent water tank
Emergency cooling pump.
After accumulator emptying, emergency cooling pump draws water from Emergent water tank injects water loop main pipeline, guarantees long-term
Cooling water flow.
Further, Electromagnetic Recirculation Pump includes two the first Electromagnetic Recirculation Pumps and the second Electromagnetic Recirculation Pump being arranged in parallel,
The primary heater includes two the first primary heaters and the second primary heater being arranged in parallel, and the water loop cooler includes
Two the first water loop coolers and the second water loop cooler being arranged in parallel, the circulating pump include two and are arranged in parallel
First circulation pump and second circulation pump, the heater includes two primary heaters and secondary heater being arranged in parallel.
The Electromagnetic Recirculation Pump, primary heater, water loop cooler, circulating pump and heater are all made of duplex configuration, increase
The reliability in entire embedded lead bismuth alloy circuit is added.
Compared with prior art, the present invention having the following advantages and benefits:
The present invention, comprising the in-pile irradiation facilities of test fuel element, will be integrally placed at high-temperature high pressure water and return in the circuit LBE
In the heap on road in device；The temperature and cooling condition provided using water loop, establishes the temperature of the circuit LBE in-pile irradiation facilities
, and the circuit LBE normal operation and the cooling under accident conditions are provided, realize that the embedded lead bismuth alloy returns through the invention
Road is able to carry out the test of LBE heap fuel element performance verification.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram in embedded lead bismuth alloy circuit.
Label and corresponding parts title in attached drawing:
1- heat-insulated pipe, 2- water loop pressure pipe, 3- moisture flow tube, 4-LBE circuit pressure pipe, 5-LBE isocon, 6- test
Section, the outlet 101-LBE, the circuit 102-LBE cooler, 103- filter, 104-LBE purification system, the first electromagnetism of 105- circulation
Pump, the second Electromagnetic Recirculation Pump of 106-, 107- flowmeter, 108- melt tank, 109- catch box, the first primary heater of 110-, 111-
Second primary heater, 112- control oxygen system, 113- expansion tank, 114-LBE entrance, 201- cooling water outlet, the first water of 202- time
Road cooler, 203- the second water loop cooler, 204- voltage-stablizer, 205- purification system, 206- first circulation pump, 207- second
Circulating pump, 208- primary heater, 209- secondary heater, the cooling water inlet 210-, 301- Emergent water tank, 302- emergency cooling
Pump, 303- accumulator, the peace note valve of 304- first, the peace note valve of 305- second.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment:
As shown in Figure 1, a kind of embedded lead bismuth alloy circuit for fuel irradiation test of the present invention, including heap are built-in
It sets, the circuit LBE and water loop,
Built-in be equipped with outer of the heap successively includes heat-insulated pipe 1, water loop pressure pipe 2, moisture flow tube 3, the circuit LBE pressure in
Solenoid 4, LBE isocon 5 and test section 6, the circuit LBE include the outlet LBE 101 and LBE entrance 114, the outlet LBE
Device forms LBE circulation loop in 101 and LBE entrance 114 and heap, and the LBE in the circuit LBE enters LBE by LBE entrance 114 and returns
The annular gap of road pressure pipe 4 and LBE isocon 5 flows downward, and turns back upwards in 5 bottom of LBE isocon, flows through test section 6
With the channel between LBE isocon 5, most device, the LBE export 101 and LBE entrance 114 in 101 outflow heap of the outlet LBE afterwards
Between be disposed with the circuit LBE cooler 102, Electromagnetic Recirculation Pump, flowmeter 107, primary heater, expansion tank 113, it is described swollen
Control oxygen system 112 is provided on swell 113；The water loop includes cooling water outlet 201 and cooling water inlet 210, described cold
But device forms cooling circuit in water out 201 and cooling water inlet 210 and heap, and the cooling water in water loop is by cooling water
The annular gap that entrance 210 enters between water loop pressure pipe 2 and moisture flow tube 3 flows downward, and turns back in 3 bottom of moisture flow tube
Upwards, the annular gap between LBE circuit pressure pipe 4 and moisture flow tube 3 is flowed through, is most flowed out in heap through cooling water outlet 201 afterwards
Device, be disposed between the cooling water outlet (201) and cooling water inlet (210) water loop cooler, circulating pump and
Heater；Filter 103 and LBE purification system 104 have been arranged in parallel between the circuit cooler 102 and Electromagnetic Recirculation Pump；
The circuit LBE further includes catch box 109, and the catch box 109 is formed into a loop with circulating pump, the catch box 109 and melting
The connection setting of tank 108；Voltage-stablizer 204 is provided between circuit cooler and circulating pump；The water loop further includes purification system
205, it is formed into a loop between the purification system 205 and circulating pump；The water loop further includes accumulator 303, the storage
Pressure safety injection tank 303 is connected to by the first peace note valve 304 with cooling water inlet 210, and the accumulator 303 passes through the second peace note
Valve 305 is connected to cooling water outlet 201；The accumulator 303 is connected to Emergent water tank 301, the accumulator 303
Emergency cooling pump 302 is provided between Emergent water tank 301.
Preferably, the Electromagnetic Recirculation Pump includes that two the first Electromagnetic Recirculation Pumps 105 being arranged in parallel and the second electromagnetism follow
Ring pump 106, the primary heater includes two the first primary heaters 110 and the second primary heater 111 being arranged in parallel, the water
Circuit cooler includes two the first water loop coolers 202 and the second water loop cooler 203 being arranged in parallel, the circulation
Pump includes two first circulation being arranged in parallel pumps 206 and second circulation pump 207, and the heater includes two and is arranged in parallel
Primary heater 208 and secondary heater 209.
The major function and the method for operation in the embedded lead bismuth alloy circuit are as follows:
(1) LBE reactor thermal-hydraulics condition is simulated, the heat release of test fuel element is exported
Water temperature is 270~280 DEG C in device in high temperature and pressure water loop heap, by radial thermal conduction temperature difference, it can be achieved that test
LBE temperature outside fuel element is 350~450 DEG C；LBE flow velocity is less than 2m/s and can adjust on a large scale in the circuit LBE, with simulation
The actual flow velocity of LBE heap.Under accidental conditions, the heat that test fuel element generates passes to LBE through heat convection；It is main
It to be ultimately transferred to water loop cooling water through the mode radially to exchange heat, and be recycled via water and take device in heap out of.A part is released
Heat is taken away by LBE heating；The high temperature LBE of test section is flowed out during rising flowing, is exchanged heat with the LBE in 5 outside of LBE isocon
And cooled down, heap is built-in postpones for outflow, is cooled further to Electromagnetic Recirculation Pump running temperature limit by the circuit LBE cooler 102
Value is following.
(2) dissolved oxygen amount and impurity in LBE are controlled, the LBE chemical environment for meeting test requirements document is established
Electromagnetic Recirculation Pump inlet upstream designs filter net type and magnetic well formula filter, and solid impurity and the part for filtering out circuit are rotten
Lose product.LBE purification system 104 can be sampled analysis, impurity purification and chemicals addition to the LBE in circuit, make LBE
Indices meet test requirements document.The control oxygen system 112 that expansion tank 113 is arranged has for the dissolved oxygen amount control in entire LBE
The corrosion of effect control LBE and structural material meet the LBE chemical property requirement of LBE prototype reactor.
(3) Residual heat removal and the long-term cooling capacity of device
After the fuel irradiation test of the circuit LBE, the radial direction using Irradiation Test device is thermally conductive, by fuel element and material
Decay heat release be transferred in water loop cooling water.Using water loop as the ultimate heat sink of fuel element waste heat.Reactor stops
After heap, cooling water flow and the temperature of water loop are gradually reduced, and section runs cooling stage between finally transitting to.
(4) prevent fuel element overheat from burning under the accident conditions of the circuit LBE
For the system pressure in the circuit LBE close to normal pressure, the cut of LBE discharges flow very little, and small cut even can be because of
The solidification of LBE and blocked.Therefore, the circuit LBE cut accident to the fuel element thermal technology security implication of embedded loop very
It is small.
When the circuit LBE causes LBE flow to be greatly lowered because of Electromagnetic Recirculation Pump failure, it will lead to outside test fuel element
The temperature of LBE significantly increases；Meanwhile because radial temperature difference increases, the cooling capacity of water loop equally rises.Calculation result table
It is bright, when the flow velocity in the circuit LBE is by 1.5m/s sharp fall 90%, without any operation, fuel element surface
Safety limit of the temperature less than 750 DEG C, the radial temperature difference of LBE pressure pipe is less than 150 DEG C and maximum temperature is less than 430 DEG C, can be with
The heat derives for guaranteeing in-pile test device, prevent test fuel element over-temperature from burning.
(5) prevent fuel element overheat from burning under water loop cut accident conditions
Under water loop cut accident conditions, the accumulator 303 of chilled(cooling) water return (CWR) fills the water simultaneously from trend hot and cold tube section,
To provide the emergency cooling capacity of water loop, pipeline cut direction is judged automatically via the signal that I&C system provides, and adjusts the
One peace note valve 304,305 open position of the second safety valve, to ensure that emergency cooling water flows through device in heap with big flow, it is ensured that combustion
Expect the safety of device in element and heap.After accumulator 303 empties, 301 pure water of Emergent water tank is extracted by emergency cooling pump 302
Device in water loop heap is injected, the long-term cooling capacity of entire embedded loop is provided, guarantees fuel element safety.
(6) a variety of test parameters of real-time monitoring, and a variety of safe shutdown signals are provided
Test parameters monitors the different location of system device in the circuit LBE, heap, is provided with temperature, flow, pressure, oxygen
The parameter detectors such as content provide comprehensive parameter monitoring information, provide safeguard for the operation and safety in circuit.The circuit LBE heap
Interior device outlet temperature is high, shutdown is protected in the triggering research reactor of inlet flow rate low signal.The leak detection system of water loop is to water loop pressure
Solenoid carries out breakage monitoring, to guarantee that water loop challenge devices completely cut off completely with reactor.Water loop is provided with challenge devices
Outlet temperature is high, inlet flow rate is low, outlet pressure is excessively high and too low four Reactor trip signals, once there is exception in circuit operation
Trigger reactor shutdown.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of embedded lead bismuth alloy circuit for fuel irradiation test, which is characterized in that returned including device, LBE in heap
Road and water loop, in the heap device successively include from outside to inside heat-insulated pipe (1), water loop pressure pipe (2), moisture flow tube (3),
LBE circuit pressure pipe (4), LBE isocon (5) and test section (6), the circuit LBE include the outlet LBE (101) and LBE entrance
(114), device formation LBE circulation loop in the outlet the LBE (101), LBE entrance (114) and heap, LBE in the circuit LBE by
LBE entrance (114) enters LBE circuit pressure pipe (4) and the annular gap of LBE isocon (5) flows downward, in LBE isocon
(5) bottom is turned back upwards, flows through the channel between test section (6) and LBE isocon (5), most flows out heap through the outlet LBE (101) afterwards
Interior device is disposed with the circuit LBE cooler (102) between the outlet LBE (101) and LBE entrance (114), electromagnetism follows
Ring pump, flowmeter (107), primary heater, expansion tank (113) are provided with control oxygen system (112) on the expansion tank (113)；Institute
Stating water loop includes cooling water outlet (201) and cooling water inlet (210), the cooling water outlet (201) and cooling water inlet
(210) cooling circuit is formed with device in heap, the cooling water in water loop enters water loop pressure by cooling water inlet (210)
Annular gap between solenoid (2) and moisture flow tube (3) flows downward, and turns back upwards in moisture flow tube (3) bottom, flows through LBE
Device in heap, institute are most flowed out through cooling water outlet (201) afterwards in annular gap between circuit pressure pipe (4) and moisture flow tube (3)
It states and is disposed with water loop cooler, circulating pump and heater between cooling water outlet (201) and cooling water inlet (210).
2. a kind of embedded lead bismuth alloy circuit for fuel irradiation test according to claim 1, which is characterized in that
Filter (103) and LBE purification system (104) have been arranged in parallel between the circuit cooler (102) and Electromagnetic Recirculation Pump.
3. a kind of embedded lead bismuth alloy circuit for fuel irradiation test according to claim 1, which is characterized in that
The circuit LBE further includes catch box (109), and the catch box (109) and circulating pump are formed into a loop, the catch box (109)
Setting is connected to melting tank (108).
4. a kind of embedded lead bismuth alloy circuit for fuel irradiation test according to claim 1, which is characterized in that
Voltage-stablizer (204) are provided between the water loop cooler and circulating pump.
5. a kind of embedded lead bismuth alloy circuit for fuel irradiation test according to claim 1, which is characterized in that
The water loop further includes purification system (205), is formed into a loop between the purification system (205) and circulating pump.
6. a kind of embedded lead bismuth alloy circuit for fuel irradiation test according to claim 1, which is characterized in that
The water loop further includes accumulator (303), and the accumulator (303) passes through the first peace note valve (304) and cooling
Water inlet (210) connection, the accumulator (303) are connected to by the second peace note valve (305) with cooling water outlet (201).
7. a kind of embedded lead bismuth alloy circuit for fuel irradiation test according to claim 6, which is characterized in that
The accumulator (303) is connected to Emergent water tank (301), between the accumulator (303) and Emergent water tank (301)
It is provided with emergency cooling pump (302).
8. a kind of embedded lead bismuth alloy circuit for fuel irradiation test according to claim 1-7,
It is characterized in that, the Electromagnetic Recirculation Pump includes two the first Electromagnetic Recirculation Pumps (105) and the second Electromagnetic Recirculation Pump being arranged in parallel
(106), the primary heater includes two the first primary heaters (110) and the second primary heater (111) being arranged in parallel, described
Water loop cooler includes two the first water loop coolers (202) and the second water loop cooler (203) being arranged in parallel, institute
Stating circulating pump includes two first circulation being arranged in parallel pumps (206) and second circulation pump (207), and the heater includes two
The primary heater (208) and secondary heater (209) being arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811343356.XA CN109473184B (en) | 2018-11-13 | 2018-11-13 | Embedded lead bismuth alloy loop for fuel irradiation test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811343356.XA CN109473184B (en) | 2018-11-13 | 2018-11-13 | Embedded lead bismuth alloy loop for fuel irradiation test |
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| CN109473184B CN109473184B (en) | 2020-03-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828007A (en) * | 2019-11-18 | 2020-02-21 | 中国核动力研究设计院 | Special voltage stabilizer and pressure control system for reactor irradiation examination loop |
| CN114864120A (en) * | 2022-04-24 | 2022-08-05 | 中国原子能科学研究院 | Oxygen content adjusting module and reaction system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114864120A (en) * | 2022-04-24 | 2022-08-05 | 中国原子能科学研究院 | Oxygen content adjusting module and reaction system |
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| CN109473184B (en) | 2020-03-17 |
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